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Old 12-03-2013, 11:06 PM   #1
landy
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Heater/AC Diverter Box and Flap

The flap inside the diverter box no longer moves with the cable. I can push the flap open and closed so I'm assuming the flap is done for after 40 plus years of service ('72 Blazer).

Brothers has replacement boxes listed for around $110 and LMC for around $120. I've been dissatisfied with some of the parts I've purchased from LMC, so am intending to purchase the box from Brothers, especially since it's $10 cheaper. But are there actually multiple manufacturers making these kinds of replacement parts or are these made at the same Chinese factory, but Brothers is just cheaper?
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Old 12-04-2013, 12:37 AM   #2
zeldman
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Re: Heater/AC Diverter Box and Flap

I would guess there is only one manufacturer remaking these. Are you sure the door is broken? I had one years ago and it was slipping on the steel rod the door is mounted on. A little super glue and aluminum strips re-enforcing the door so it wont break and it worked fine.
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Old 12-04-2013, 01:36 AM   #3
landy
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Re: Heater/AC Diverter Box and Flap

I think the door is slipping on the steel rod. I haven't taken it out, but I'm assuming that part of the door is broken or cracked. Perhaps it's repairable per your suggestion. Looks like removing the box is a bit of a PITA. Can the door or flap be removed w/o removing the box?
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Old 12-04-2013, 07:42 AM   #4
Andy4639
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Wink Re: Heater/AC Diverter Box and Flap

I tried fixing mine several years ago with no success. I bought mine from a vendor locally U have to pull it out to try and fix it.
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Old 12-04-2013, 12:07 PM   #5
cdowns
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Re: Heater/AC Diverter Box and Flap

i never had any luck tryin to rebuild or save the things// and found the easy warmest way to fix was replace with a new one from lmc at the time
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Old 12-05-2013, 03:58 PM   #6
BigRed76
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Re: Heater/AC Diverter Box and Flap

Maybe check Classic Heartbeat or GMC Pauls? They both have really good parts for our trucks...
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